CN112264194B - High-efficiency flotation collector for high-sulfur iron easily-argillized fine-grained complex-embedded copper-molybdenum ores and preparation method and application thereof - Google Patents
High-efficiency flotation collector for high-sulfur iron easily-argillized fine-grained complex-embedded copper-molybdenum ores and preparation method and application thereof Download PDFInfo
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- CN112264194B CN112264194B CN202011214563.2A CN202011214563A CN112264194B CN 112264194 B CN112264194 B CN 112264194B CN 202011214563 A CN202011214563 A CN 202011214563A CN 112264194 B CN112264194 B CN 112264194B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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Abstract
The invention discloses a high-efficiency flotation collector for fine-grained complex embedded copper-molybdenum ores refined by high-sulfur-iron easy-mud, and a preparation method and application thereof. The collecting agent has the advantages of small dosage, high flotation speed, stable and non-adhesive foam property, balanced copper and molybdenum collecting property, strong adaptability to high-sulfur iron and easily-argillized silicate gangue, capability of enabling micro-fine-particle copper and molybdenum ores to generate hydrophobic agglomeration, capability of effectively improving the loss of micro-fine-particle copper and molybdenum in sulfur in the copper and sulfur separation process, and contribution to subsequent copper and molybdenum separation operation and capability of obtaining higher molybdenum concentrate grade compared with the traditional xanthate collecting agent.
Description
Technical Field
The invention belongs to the technical field of metallurgy, further belongs to the technical field of copper-molybdenum ore flotation reagents, and particularly relates to a high-efficiency flotation collector for high-sulfur iron easy-mud-refining fine-grain complex embedded copper-molybdenum ore as well as a preparation method and application thereof.
Background
Along with continuous mining of large porphyry copper ore resources in various countries in the world, the copper ore resources face to be poor, the skarn type copper ore is more and more valued by mineral separation workers, the ore body of the ore deposit is poor in continuity, more impurity elements exist, gangue minerals have larger influence on flotation, and a fine particle distribution structure exists more, generally, high-pyrite and easily-argillized clay minerals interfere the copper ore separation process, and particularly when the copper ore contains molybdenum, the properties of the complex symbiotic fine particle distribution ores provide tests for mineral separation work.
For the flotation of the copper-molybdenum ores, the improvement of the recovery rate of copper and molybdenum generally faces the technical problem of the separation of micro-fine copper-molybdenum minerals from pyrite and argillized clay minerals. The traditional collectors are most commonly xanthates and nigrides, and are secondly esters, sulfur and nitrogen and some codes. The xanthate collecting agent mainly comprises ethyl, butyl, isoamyl xanthate and the like, the black powder mainly comprises butylammonium black powder, 15# and 25# phenol black powder, No. 208 and the like, the ester medicament mainly comprises Z-200, such as the above collecting agent can not well consider the collection of copper and molybdenum, the high-collecting force has insufficient selectivity for pyrite and other magnesium-containing silicate minerals, the high-selectivity has weak collecting property for minerals of a micro-fine particle embedded part, and the subsequent copper and molybdenum separation can not separate high-grade molybdenum concentrate, so the existing flotation medicament has insufficient adaptability to the ores, and has important significance for developing the high-efficiency flotation collecting agent suitable for high-sulfur iron easily-argillized fine-particle complex embedded copper and molybdenum ores.
Disclosure of Invention
The first purpose of the invention is to provide a high-efficiency flotation collector for high-sulfur iron, easy-mud refining, fine-grained and complex embedded copper-molybdenum ores; the second purpose is to provide the preparation method of the high-efficiency flotation collector for the high-sulfur iron easy-mud refined fine-grained complex embedded copper-molybdenum ore; the third purpose is to provide the application of the high-efficiency flotation collector for the high-sulfur iron easy-mud refined fine-grained complex embedded copper-molybdenum ore.
The first purpose of the invention is realized by the following steps that the high-efficiency flotation collector for the high-sulfur iron easy-mud-refining fine-grained complex embedded copper-molybdenum ore consists of 15-25 parts by weight of xanthates, 15-25 parts by weight of thiamines, 6-10 parts by weight of tartaric acid, 23-35 parts by weight of modified oil and 20-30 parts by weight of surfactant.
Further, the xanthate is isoamyl xanthate acrylonitrile or sec-butyl xanthate acrylonitrile; the thiamine ester is isopropyl allyl thiourethane or n-butyl allyl thiourethane or isoamyl allyl thiourethane; the surfactant is prepared by sodium dodecyl benzene sulfonate, sodium glycerol monolaurate monosulfate and sodium bis-2-hexyl ethyl sulfonated succinate according to a given proportion; the modified oil is an emulsified mixture prepared from kerosene and neutral oil according to a certain proportion, and the neutral oil is phenol or pyridine.
Furthermore, the preparation proportion of the surfactant is 50% of sodium dodecyl benzene sulfonate, 40% of sodium glycerol monolaurate monosulfate and 10% of sodium bis-2-hexyl ethyl sulfosuccinate.
Furthermore, the modified oil is prepared from 60% of kerosene and 40% of neutral oil.
The second purpose of the invention is realized by the steps of preparing the surfactant, preparing the modified oil and formulating, and specifically comprising the following steps of:
A. preparing a surfactant: weighing sodium dodecyl benzene sulfonate, sodium glycerol monolaurate monosulfate and sodium bis-2-hexylethyl sulfonated succinate according to the formula ratio, sequentially adding the materials into an ethanol solution, and uniformly stirring to obtain a target surfactant;
B. preparing modified oil: stirring and shearing the kerosene and the neutral oil which are proportioned according to the formula at a high speed to obtain target modified oil;
C. preparation:
1) adding the modified oil into the surfactant, and uniformly stirring to obtain a material a;
2) tartaric acid, xanthate and thiourethane in a formula ratio are sequentially added into the material a, and the mixture is stirred and uniformly mixed to obtain the target high-sulfur iron easy-mud-refining fine-grain complex embedded copper-molybdenum ore efficient flotation collector.
The specific operation is as follows:
A. adding the surfactant in parts by weight into ethanol in equal parts by weight in a stirring kettle, and fully and uniformly stirring at the temperature of 20-40 ℃ and the stirring speed of 1200-1600r/min to obtain a solution a. The addition mode of the surfactant is as follows: sequentially adding sodium dodecyl benzene sulfonate, sodium glyceryl monolaurate monosulfate and sodium bis-2-hexylethyl sulfosuccinate into ethanol under stirring, wherein the addition time interval of each surfactant is 5-8 minutes, and stirring for 20-30 minutes;
B. stirring and shearing the kerosene and the neutral oil at a high speed according to the proportion at the temperature of 35-40 ℃ and the stirring speed of 2500-;
C. adding the emulsion product b into the solution a, and stirring for 40-60 minutes at the temperature of 30-40 ℃ and the stirring speed of 1000-1200r/min to obtain a solution c. Wherein, the medicament is added and stirred for 10 to 20 minutes;
D. and (3) pre-stirring the solution c at the temperature of 35-45 ℃ and the stirring speed of 800-1200r/min, and sequentially adding the tartaric acid, the xanthate and the thiourethane in parts by weight, wherein the reagent is added, the stirring time interval is 10-15 minutes, and the stirring time interval is 45-70 minutes, so that the high-efficiency flotation collector for the high-sulfur iron easy-argillization fine-grained complex embedded copper-molybdenum ore is obtained.
The third purpose of the invention is realized by applying the high-efficiency flotation collector for the high-sulfur iron easy-mud refined fine-grained complex embedded copper-molybdenum ore to a copper-molybdenum ore flotation process, crushing and grinding the high-sulfur iron easy-mud refined fine-grained complex embedded copper-molybdenum ore raw ore, and performing flotation by using the high-efficiency flotation collector for the high-sulfur iron easy-mud refined fine-grained complex embedded copper-molybdenum ore, wherein the usage amount of the high-efficiency flotation collector for the high-sulfur iron easy-mud refined fine-grained complex embedded copper-molybdenum ore is 1.5-2.0 Kg/t calculated by the raw ore.
The xanthate is a derivative of xanthate, has high flotation speed, weaker capacity of collecting pyrite, better selectivity than xanthate and strong suitability for high-sulfur iron copper molybdenum ore; the thiamine esters are also derivatives of xanthate, are effective collectors of copper minerals, are good in dispersity and small in dosage, have weak capability of collecting pyrite, and have good effect on preferential copper flotation in sulfur; the modified oil has good collecting property on molybdenum minerals and has a certain hydrophobic flocculation effect on fine copper-molybdenum minerals; tartaric acid is an antioxidant synergist; the sodium dodecyl benzene sulfonate is an organic surfactant, has good surface activity and stronger hydrophilicity, effectively reduces the tension of an oil-water interface, and achieves the emulsification effect; the sodium glyceryl monolaurate monosulfate is a water-soluble anionic surfactant, has a good emulsifying function on a molybdenum ore oil collector, is high in flotation speed, and is strong in collecting force on the intergrowth; the sodium bis-2-hexylethylsulfosuccinate is an anionic surfactant, has a certain defoaming function, can improve foam stickiness caused by argillization, and improves selectivity.
The invention determines the combination of each component and the weight part range of each component through a large number of mineral separation tests, and the combination and the weight part range of the components can play a synergistic effect among the components.
The invention has the advantages that:
1. the preparation method is simple, produces no intermediate product, is superior to the traditional xanthate collecting agent, and has low toxicity, low irritation, good degradability and environmental friendliness;
2. the dosage of the medicament is small, the flotation speed is high, and the foam property is stable and is not adhered;
3. the copper-molybdenum composite material has the advantages of relatively balanced copper-molybdenum collecting property, strong adaptability to high-sulfur iron and silicate gangue easy to argillize, good selectivity, capability of generating hydrophobic agglomeration on micro-fine copper-molybdenum ore, capability of effectively improving the loss of the micro-fine copper-molybdenum in sulfur in the copper-sulfur separation process and improvement on the recovery rate of the copper-molybdenum;
4. compared with the traditional xanthate collecting agent, the mixed copper-molybdenum separation method is beneficial to the subsequent copper-molybdenum separation operation and obtains higher molybdenum concentrate grade.
The collecting agent has the advantages of small dosage, high flotation speed, stable and non-adhesive foam property, balanced copper and molybdenum collecting property, strong adaptability to high-sulfur iron and easily-argillized silicate gangue, capability of enabling micro-fine-particle copper-molybdenum ores to generate hydrophobic agglomeration, capability of effectively improving the loss of micro-fine-particle copper and molybdenum in sulfur in the copper-sulfur separation process, and contribution to subsequent copper-molybdenum separation operation and capability of obtaining higher molybdenum concentrate grade compared with the traditional xanthate collecting agent.
Drawings
FIG. 1 is a schematic diagram of a process flow of the high-efficiency flotation collector for high-sulfur iron easily-argillized fine-grained complex embedded copper-molybdenum ores, which is used in copper-molybdenum mixed separation and copper-molybdenum separation.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to be limiting in any way, and any modifications or alterations based on the teachings of the present invention are intended to fall within the scope of the present invention.
The high-efficiency flotation collector for the high-sulfur iron easy-mud-refining fine-particle complex embedded copper-molybdenum ore comprises, by weight, 15-25 parts of xanthates, 15-25 parts of thiamines, 6-10 parts of tartaric acid, 23-35 parts of modified oil and 20-30 parts of surfactant.
The high-efficiency flotation collector for the high-sulfur iron easy-mud refined fine-grain complex embedded copper-molybdenum ore consists of 20 parts by weight of xanthate, 20 parts by weight of thiamine, 8 parts by weight of tartaric acid, 32 parts by weight of modified oil and 20 parts by weight of surfactant.
The xanthate is isopentyl sulfonic acid acrylonitrile ester or sec-butyl xanthate acrylonitrile ester.
The thiamine ester is one of isopropyl allyl thiourethane, n-butyl allyl thiourethane and isoamyl allyl thiourethane.
The modified oil is an emulsified mixture of kerosene and neutral oil.
The volume ratio of the kerosene to the neutral oil is (5-7): (3-5).
The neutral oil is phenol or pyridine.
The surfactant comprises 40-60 parts by weight of sodium dodecyl benzene sulfonate, 30-50 parts by weight of sodium glycerol monolaurate monosulfate and 5-15 parts by weight of sodium bis-2-hexyl ethyl sulfosuccinate.
The preparation method of the high-efficiency flotation collector for the high-sulfur iron easy-mud refined fine-grained complex embedded copper-molybdenum ore comprises the steps of surfactant preparation, modified oil preparation and preparation, and specifically comprises the following steps:
A. preparing a surfactant: weighing sodium dodecyl benzene sulfonate, sodium glycerol monolaurate monosulfate and sodium bis-2-hexylethyl sulfonated succinate according to the formula ratio, sequentially adding the materials into an ethanol solution, and uniformly stirring to obtain a target surfactant;
B. preparing modified oil: stirring and shearing the kerosene and the neutral oil which are proportioned according to the formula at a high speed to obtain target modified oil;
C. preparation:
1) adding the modified oil into the surfactant, and uniformly stirring to obtain a material a;
2) tartaric acid, xanthate and thiourethane in a formula ratio are sequentially added into the material a, and the mixture is stirred and uniformly mixed to obtain the target high-sulfur iron easy-mud refined fine-grain complex embedded copper-molybdenum ore high-efficiency flotation collector.
The high-efficiency flotation collector for the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore is applied to a copper-molybdenum ore flotation process, after raw ore of the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore is crushed and ground, the high-efficiency flotation collector for the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore is used for flotation, and the usage amount of the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore high-efficiency flotation collector is 1.5-2.0 Kg/t calculated by the raw ore.
The invention is further illustrated by the following specific examples:
the weight parts of different raw material components in the following examples are changed and all the raw material components are reacted according to the flotation indexes obtained by the process flow.
Example 1
The raw materials of this example consisted of: the raw materials comprise, by weight, 20 parts of isopentyl xanthogen acrylonitrile ester, 20 parts of isopropyl allyl thiourethane, 8 parts of tartaric acid, 32 parts of modified oil and 20 parts of surfactant.
The modified oil comprises 19.2 parts of kerosene and 12.8 parts of phenol.
The surfactant comprises, by weight, 10 parts of sodium dodecyl benzene sulfonate, 8 parts of sodium glycerol monolaurate monosulfate and 2 parts of sodium bis-2-hexyl ethyl sulfosuccinate.
The preparation method of the high-efficiency flotation collector for the high-sulfur iron easily-argillized fine-grained complex embedded copper-molybdenum ore comprises the following steps:
A. and (3) adding the surfactant in parts by weight into ethanol in equal parts by weight in a stirring kettle, and fully and uniformly stirring at the temperature of 25 ℃ and the stirring speed of 1200r/min to obtain a solution a. The addition mode of the surfactant is as follows: sodium dodecyl benzene sulfonate, sodium glycerol monolaurate monosulfate and sodium bis-2-hexylethyl sulfosuccinate are sequentially added into ethanol in a stirring state, wherein the adding time interval of each surfactant is 6 minutes, and the stirring is carried out for 20 minutes;
B. stirring and shearing kerosene and phenol in parts by weight at a high speed at 35 ℃ and the stirring speed of 2600r/min to obtain an emulsion product b;
C. adding the emulsion product b in parts by weight into the solution a, and stirring for 60 minutes at 35 ℃ and the stirring speed of 1000r/min to obtain a solution c. Wherein, the adding time interval of the medicament is 12 minutes;
D. and (3) stirring the solution c at 40 ℃ and the stirring speed of 1000r/min in advance, and sequentially adding the tartaric acid, the isoamyl xanthogen acrylonitrile ester and the isopropyl allyl thiourethane in parts by weight, wherein the medicament is added and stirred for 10 minutes. Stirring for 50 minutes to obtain the high-efficiency flotation collector for the high-sulfur iron easy-argillization fine-grained complex embedded copper-molybdenum ore.
The application result of the product is as follows: the copper-molybdenum collector is used as a copper-molybdenum collector in a certain plant in Tibet, and the flotation effect is determined:
calculated by the actual weight of the prepared stock solution, the total amount of the added ore pulp is 100g/t, and compared according to the process flow shown in the attached drawing of the specification, the copper recovery rate of the copper-molybdenum mixed concentrate of copper-molybdenum mixed separation is 91.5%, the copper grade is 25%, the molybdenum recovery rate of the molybdenum concentrate of copper-molybdenum separation is 92%, the molybdenum grade is 45%, and the product is superior to the current xanthate product (100 g/t of xanthate product with the same dosage, 87%, 24%, 80% and 41%).
Example 2
The raw materials of this example consisted of: the raw materials comprise, by weight, 18 parts of sec-butyl xanthogenate propionitrile ester, 22 parts of n-butyl allyl thiourethane, 10 parts of tartaric acid, 25 parts of modified oil and 25 parts of surfactant.
The modified oil comprises 15 parts of kerosene and 10 parts of phenol.
The surfactant comprises, by weight, 12.5 parts of sodium dodecyl benzene sulfonate, 10 parts of sodium glycerol monolaurate monosulfate and 2.5 parts of sodium bis-2-hexyl ethyl sulfosuccinate.
The preparation method of the high-efficiency flotation collector for the high-sulfur iron easily-argillized fine-grained complex embedded copper-molybdenum ore comprises the following steps:
A. and (3) adding the surfactant in parts by weight into ethanol in equal parts by weight in a stirring kettle, and fully and uniformly stirring at the temperature of 30 ℃ and the stirring speed of 1500r/min to obtain a solution a. The addition mode of the surfactant is as follows: sodium dodecyl benzene sulfonate, sodium glycerol monolaurate monosulfate and sodium bis-2-hexylethyl sulfosuccinate are sequentially added into ethanol in a stirring state, wherein the adding time interval of each surfactant is 5 minutes, and the stirring is carried out for 25 minutes;
B. stirring and shearing kerosene and phenol in parts by weight at a high speed at 37 ℃ and at a stirring speed of 2800r/min to obtain an emulsion product b;
C. adding the emulsion product b into the solution a by weight, and stirring for 50 minutes at the temperature of 30 ℃ and the stirring speed of 1100r/min to obtain a solution c. Wherein, the adding time interval of the medicament is 10 minutes;
D. and (3) stirring the solution c at 35 ℃ and a stirring speed of 1200r/min in advance, and sequentially adding the tartaric acid, the sec-butyl-xanthogen propionitrile ester and the n-butyl allyl thionocarbamate in parts by weight, wherein the medicament is added and stirred for 12 minutes. Stirring for 60 minutes to obtain the high-efficiency flotation collector for the high-sulfur iron easy-argillization fine-grained complex embedded copper-molybdenum ore.
The application result of the product is as follows: the copper-molybdenum collector is used as a copper-molybdenum collector in a certain plant in Gansu province, and the flotation effect is determined:
calculated by the actual weight of the prepared stock solution, the total amount of the added ore pulp is 100g/t, and compared according to the process flow shown in the attached drawing of the specification, the copper recovery rate of the copper-molybdenum mixed concentrate of copper-molybdenum mixed separation is 90.6%, the copper grade is 25.3%, the molybdenum recovery rate of the molybdenum concentrate of copper-molybdenum separation is 90.9%, and the molybdenum grade is 46%, which are superior to the prior xanthate product (100 g/t of xanthate product with the same dosage, 86.7% of copper recovery rate, 23.8% of copper grade, 82.5% of molybdenum recovery rate, and 39.7% of molybdenum grade).
Example 3
The raw materials of this example consisted of: the raw materials comprise, by weight, 25 parts of sec-butyl propionitrile xanthate, 15 parts of isoamyl allyl thiourethane, 6 parts of tartaric acid, 34 parts of modified oil and 20 parts of a surfactant.
The modified oil comprises 20.4 parts of kerosene and 13.6 parts of pyridine.
The surfactant comprises, by weight, 10 parts of sodium dodecyl benzene sulfonate, 8 parts of sodium glycerol monolaurate monosulfate and 2 parts of sodium bis-2-hexyl ethyl sulfosuccinate.
The preparation method of the high-efficiency flotation collector for the high-sulfur iron easily-argillized fine-grained complex embedded copper-molybdenum ore comprises the following steps:
A. and (3) adding the surfactant in parts by weight into ethanol in equal parts by weight in a stirring kettle, and fully and uniformly stirring at the temperature of 35 ℃ and the stirring speed of 1300r/min to obtain a solution a. The addition mode of the surfactant is as follows: sodium dodecyl benzene sulfonate, sodium glycerol monolaurate monosulfate and sodium bis-2-hexylethyl sulfosuccinate are sequentially added into ethanol in a stirring state, wherein the adding time interval of each surfactant is 8 minutes, and the mixture is stirred for 30 minutes;
B. stirring and shearing kerosene and pyridine in the weight portions at a high speed at 40 ℃ and at a stirring speed of 3000r/min to obtain an emulsion product b;
C. adding the emulsion product b in parts by weight into the solution a, and stirring for 55 minutes at 37 ℃ and the stirring speed of 1200r/min to obtain a solution c. Wherein, the adding time interval of the medicament is 12 minutes;
D. and (3) stirring the solution c at 41 ℃ and a stirring speed of 1080r/min in advance, and sequentially adding the tartaric acid, the sec-butyl xanthogen propionitrile ester and the isoamyl allyl thionocarbamate in parts by weight, wherein the medicament is added and stirred for 13 minutes. Stirring for 65 minutes to obtain the high-efficiency flotation collector for the high-sulfur iron easy-argillization fine-grained complex embedded copper-molybdenum ore.
The application result of the product is as follows: the copper-molybdenum collector is used as a copper-molybdenum collector in a certain factory in Xinjiang, and the flotation effect is measured:
calculated by the actual weight of the prepared stock solution, the total amount of the added ore pulp is 100g/t, and compared according to the process flow shown in the attached drawing of the specification, the recovery rate of copper in the copper-molybdenum mixed concentrate of copper-molybdenum mixed separation is 92.1%, the copper grade is 24.9%, the recovery rate of molybdenum in the molybdenum concentrate of copper-molybdenum separation is 91.7%, the molybdenum grade is 45.6%, and the product is superior to the current xanthate product (100 g/t of xanthate product with the same dosage, 87.6% of copper, 23.5% of copper, about 81.3% of molybdenum and 40.9% of molybdenum).
Example 4
The raw materials of this example consisted of: the raw materials comprise, by weight, 15 parts of isopentyl xanthogen acrylonitrile ester, 20 parts of isopentyl allyl thiourethane, 8 parts of tartaric acid, 27 parts of modified oil and 30 parts of surfactant.
The modified oil comprises 16.2 parts of kerosene and 10.8 parts of pyridine.
The surfactant comprises 15 parts by weight of sodium dodecyl benzene sulfonate, 12 parts by weight of sodium monolaurate monosulfate and 3 parts by weight of sodium bis-2-hexyl ethyl sulfosuccinate.
The preparation method of the high-efficiency flotation collector for the high-sulfur iron easily-argillized fine-grained complex embedded copper-molybdenum ore comprises the following steps:
A. and (3) adding the surfactant in parts by weight into ethanol in equal parts by weight in a stirring kettle, and fully and uniformly stirring at the temperature of 28 ℃ and the stirring speed of 1600r/min to obtain a solution a. The addition mode of the surfactant is as follows: sodium dodecyl benzene sulfonate, sodium glycerol monolaurate monosulfate and sodium bis-2-hexyl ethyl sulfosuccinate are sequentially added into ethanol in a stirring state, wherein the adding time interval of each surfactant is 7 minutes, and the stirring is carried out for 28 minutes totally;
B. stirring and shearing kerosene and pyridine in the weight portions at a high speed at 39 ℃ and the stirring speed of 2900r/min to obtain an emulsion product b;
C. adding the emulsion product b in parts by weight into the solution a, and stirring for 58 minutes at 37 ℃ and at the stirring speed of 1180r/min to obtain a solution c. Wherein the adding time interval of the medicament is 18 minutes;
D. and (3) stirring the solution c at 39 ℃ and at a stirring speed of 1180r/min in advance, and sequentially adding the tartaric acid, the isoamyl xanthogen acrylonitrile ester and the isoamyl allyl thiourethane in parts by weight, wherein the medicament is added and stirred for 12 minutes. Stirring for 60 minutes to obtain the high-efficiency flotation collector for the high-sulfur iron easy-argillization fine-grained complex embedded copper-molybdenum ore.
The application result of the product is as follows: the copper-molybdenum collector is used as a copper-molybdenum collector in a certain factory in Yunnan, and the flotation effect is determined:
calculated by the actual weight of the prepared stock solution, the total amount of the added ore pulp is 100g/t, and compared according to the technological process shown in the attached figure of the specification, the recovery rate of copper in the copper-molybdenum mixed concentrate in the copper-molybdenum mixed separation is 89.9%, the copper grade is 26.3%, the recovery rate of molybdenum in the copper-molybdenum separation is 91.3%, and the molybdenum grade is 45.7%, which are superior to the current xanthate product (100 g/t of the xanthate product with the same dosage, the recovery rate of copper is 85.3%, the copper grade is 22.9%, the recovery rate of molybdenum is about 85.7%, and the molybdenum grade is 39.8%).
Claims (9)
1. The high-efficiency flotation collector for the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore is characterized by comprising 15-25 parts by weight of xanthates, 15-25 parts by weight of sulphates, 6-10 parts by weight of tartaric acid, 23-35 parts by weight of modified oil and 20-30 parts by weight of surfactant; the preparation method comprises the steps of surfactant preparation, modified oil preparation and preparation, and specifically comprises the following steps:
A. preparing a surfactant: weighing sodium dodecyl benzene sulfonate, sodium glycerol monolaurate monosulfate and sodium bis-2-hexylethyl sulfonated succinate according to the formula ratio, sequentially adding the sodium dodecyl benzene sulfonate, the sodium glycerol monolaurate monosulfate and the sodium bis-2-hexylethyl sulfonated succinate into an ethanol solution, and uniformly stirring to obtain a target surfactant;
B. preparing modified oil: stirring and shearing the kerosene and the neutral oil which are proportioned according to the formula at a high speed to obtain target modified oil;
C. preparation:
1) adding the modified oil into the surfactant, and uniformly stirring to obtain a material a;
2) tartaric acid, xanthate and thiourethane in a formula ratio are sequentially added into the material a, and the mixture is stirred and uniformly mixed to obtain the target high-sulfur iron easy-mud refined fine-grain complex embedded copper-molybdenum ore high-efficiency flotation collector.
2. The high-efficiency flotation collector for the high-pyrite easy-mud refined fine-grained complex embedded copper-molybdenum ore according to claim 1, wherein the high-efficiency flotation collector for the high-pyrite easy-mud refined fine-grained complex embedded copper-molybdenum ore is composed of, by weight, 20 parts of xanthates, 20 parts of thiamines, 8 parts of tartaric acid, 32 parts of modified oil and 20 parts of surfactant.
3. The high-efficiency flotation collector for fine-grained complex disseminated copper-molybdenum ore with high sulfur iron content and easy mud refining according to claim 1 or 2, wherein the xanthate is allyl isoamyl sulfonate or propionitrile sec-butyl xanthate.
4. The high-efficiency flotation collector for fine-grained complex embedded copper-molybdenum ores, which is high in sulfur content, iron content and easy to mud refining according to claim 1 or 2, is characterized in that the thiamine ester is one of isopropyl allyl thiourethane, n-butyl allyl thiourethane and isoamyl allyl thiourethane.
5. The high-efficiency flotation collector for fine-grained complex embedded copper-molybdenum ores, which is easy to slime and has high sulfur content, according to claim 1 or 2, is characterized in that the modified oil is an emulsified mixture of kerosene and neutral oil.
6. The high-efficiency flotation collector for the high-sulfur iron easy-mud refined fine-grained complex embedded copper-molybdenum ore according to claim 5, wherein the volume ratio of kerosene to neutral oil is (5-7): (3-5).
7. The high-efficiency flotation collector for fine-grained complex embedded copper-molybdenum ores high-sulfur iron easy-mud refining according to claim 5, wherein the neutral oil is phenol or pyridine.
8. The efficient flotation collector for the fine-grained complex embedded copper-molybdenum ores, which is easy to slime and thin according to claim 1 or 2, is characterized in that the surfactant comprises 40-60 parts by weight of sodium dodecyl benzene sulfonate, 30-50 parts by weight of sodium monolaurate monosulfate and 5-15 parts by weight of sodium bis-2-hexylethyl sulfonated succinate.
9. The application of the high-efficiency flotation collector for the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore according to any one of claims 1 to 8 is characterized in that the high-efficiency flotation collector for the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore is applied to a copper-molybdenum ore flotation process, after the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore raw ore is crushed and ground, the high-efficiency flotation collector for the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore is used for flotation, and the usage amount of the high-sulfur-iron easy-mud refined fine-grained complex embedded copper-molybdenum ore high-efficiency flotation collector is 1.5-2.0 Kg/t calculated by the raw ore.
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